THERMAL-CONDUCTIVITY AND ELECTRICAL-RESISTIVITY OF QUENCHED BETA-TI-VALLOY SYSTEM AT ABOUT 300 K AND 84 K

Thermal conductivity kappa and electrical resistivity rho of solution treated beta Ti-V alloys were measured in two temperature ranges, near liquid nitrogen temperature (LN) and room temperature (RT), and compa red to commercial purity Ti, high-purity Ti and austenitic stainless s teel SUS304. The kappa and also its temperature dependence of the beta Ti-V alloys were smallest among all other alloys. In both temperature ranges, LN and RT, the rho and kappa- of all alloys showed reciprocal ly proportional relations. According to the Wiedemann-Franz's law, emp irical relations between temperature T, resistivity rho and thermal co nductivity kappa obtained for beta Ti-V alloys were, kappa/(Wm(-1) K-1 ) = 1.30.10(-8)[rho(-1)T/(Omega(-1) m(-1) K)] +1.78 at room temperatur e and kappa/(Wm(-1) K-1) = 6.08.10(-8)[rho(-1)T/(rho(-1) m(-1) K)] +0. 081 for temperatures between 83 and 85 K.